14311421 has 2 divisors, whose sum is σ = 14311422. Its totient is φ = 14311420.

The previous prime is 14311417. The next prime is 14311457. The reversal of 14311421 is 12411341.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12859396 + 1452025 = 3586^2 + 1205^2 .

It is an emirp because it is prime and its reverse (12411341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14311421 - 2² = 14311417 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 14311421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14311481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7155710 + 7155711.

It is an arithmetic number, because the mean of its divisors is an integer number (7155711).

Almost surely, 2^14311421 is an apocalyptic number.

It is an amenable number.

14311421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14311421 is an equidigital number, since it uses as much as digits as its factorization.

14311421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 17.

The square root of 14311421 is about 3783.0438802636. The cubic root of 14311421 is about 242.7882058908.

Adding to 14311421 its reverse (12411341), we get a palindrome (26722762).

The spelling of 14311421 in words is "fourteen million, three hundred eleven thousand, four hundred twenty-one".